src/com/owncloud/android/ui/fragment/OCFileListFragment.java

   1 /**
   2  *   ownCloud Android client application
   3  *
   4  *   @author Bartek Przybylski
   5  *   @author masensio
   6  *   @author David A. Velasco
   7  *   Copyright (C) 2011  Bartek Przybylski
   8  *   Copyright (C) 2015 ownCloud Inc.
   9  *
  10  *   This program is free software: you can redistribute it and/or modify
  11  *   it under the terms of the GNU General Public License version 2,
  12  *   as published by the Free Software Foundation.
  13  *
  14  *   This program is distributed in the hope that it will be useful,
  15  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *   GNU General Public License for more details.
  18  *
  19  *   You should have received a copy of the GNU General Public License
  20  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21  *
  22  */
  23 package com.owncloud.android.ui.fragment;
  24
  25 import android.app.Activity;
  26 import android.content.Intent;
  27 import android.content.SharedPreferences;
  28 import android.os.Build;
  29 import android.os.Bundle;
  30 import android.preference.PreferenceManager;
  31 import android.support.v4.widget.SwipeRefreshLayout;
  32 import android.view.ContextMenu;
  33 import android.view.Menu;
  34 import android.view.MenuInflater;
  35 import android.view.MenuItem;
  36 import android.view.View;
  37 import android.widget.AdapterView;
  38 import android.widget.AdapterView.AdapterContextMenuInfo;
  39 import android.widget.PopupMenu;
  40 import android.widget.TextView;
  41 import android.widget.Toast;
  42
  43 import com.owncloud.android.MainApp;
  44 import com.owncloud.android.R;
  45 import com.owncloud.android.authentication.AccountUtils;
  46 import com.owncloud.android.datamodel.FileDataStorageManager;
  47 import com.owncloud.android.datamodel.OCFile;
  48 import com.owncloud.android.files.FileMenuFilter;
  49 import com.owncloud.android.lib.common.utils.Log_OC;
  50 import com.owncloud.android.lib.resources.status.OwnCloudVersion;
  51 import com.owncloud.android.ui.activity.FileActivity;
  52 import com.owncloud.android.ui.activity.FileDisplayActivity;
  53 import com.owncloud.android.ui.activity.FolderPickerActivity;
  54 import com.owncloud.android.ui.activity.OnEnforceableRefreshListener;
  55 import com.owncloud.android.ui.activity.UploadFilesActivity;
  56 import com.owncloud.android.ui.adapter.FileListListAdapter;
  57 import com.owncloud.android.ui.dialog.ConfirmationDialogFragment;
  58 import com.owncloud.android.ui.dialog.CreateFolderDialogFragment;
  59 import com.owncloud.android.ui.dialog.FileActionsDialogFragment;
  60 import com.owncloud.android.ui.dialog.RemoveFileDialogFragment;
  61 import com.owncloud.android.ui.dialog.RenameFileDialogFragment;
  62 import com.owncloud.android.ui.dialog.UploadSourceDialogFragment;
  63 import com.owncloud.android.ui.preview.PreviewImageFragment;
  64 import com.owncloud.android.ui.preview.PreviewMediaFragment;
  65 import com.owncloud.android.utils.DisplayUtils;
  66 import com.owncloud.android.utils.FileStorageUtils;
  67 import com.owncloud.android.ui.preview.PreviewTextFragment;
  68
  69 import java.io.File;
  70
  71 /**
  72  * A Fragment that lists all files and folders in a given path.
  73  *
  74  * TODO refactor to get rid of direct dependency on FileDisplayActivity
  75  */
  76 public class OCFileListFragment extends ExtendedListFragment implements FileActionsDialogFragment.FileActionsDialogFragmentListener {
  77
  78     private static final String TAG = OCFileListFragment.class.getSimpleName();
  79
  80     private static final String MY_PACKAGE = OCFileListFragment.class.getPackage() != null ?
  81             OCFileListFragment.class.getPackage().getName() : "com.owncloud.android.ui.fragment";
  82
  83     public final static String ARG_JUST_FOLDERS = MY_PACKAGE + ".JUST_FOLDERS";
  84     public final static String ARG_ALLOW_CONTEXTUAL_ACTIONS = MY_PACKAGE + ".ALLOW_CONTEXTUAL";
  85     public final static String ARG_HIDE_FAB = MY_PACKAGE + ".HIDE_FAB";
  86
  87     private static final String KEY_FILE = MY_PACKAGE + ".extra.FILE";
  88     private static final String KEY_FAB_EVER_CLICKED = "FAB_EVER_CLICKED";
  89
  90     private static String DIALOG_CREATE_FOLDER = "DIALOG_CREATE_FOLDER";
  91
  92     private FileFragment.ContainerActivity mContainerActivity;
  93
  94     private OCFile mFile = null;
  95     private FileListListAdapter mAdapter;
  96     private boolean mJustFolders;
  97
  98     private OCFile mTargetFile;
  99
 100     private boolean miniFabClicked = false;
 101
 102     /**
 103      * {@inheritDoc}
 104      */
 105     @Override
 106     public void onAttach(Activity activity) {
 107         super.onAttach(activity);
 108         Log_OC.e(TAG, "onAttach");
 109         try {
 110             mContainerActivity = (FileFragment.ContainerActivity) activity;
 111
 112         } catch (ClassCastException e) {
 113             throw new ClassCastException(activity.toString() + " must implement " +
 114                     FileFragment.ContainerActivity.class.getSimpleName());
 115         }
 116         try {
 117             setOnRefreshListener((OnEnforceableRefreshListener) activity);
 118
 119         } catch (ClassCastException e) {
 120             throw new ClassCastException(activity.toString() + " must implement " +
 121                     SwipeRefreshLayout.OnRefreshListener.class.getSimpleName());
 122         }
 123     }
 124
 125
 126     @Override
 127     public void onDetach() {
 128         setOnRefreshListener(null);
 129         mContainerActivity = null;
 130         super.onDetach();
 131     }
 132
 133     /**
 134      * {@inheritDoc}
 135      */
 136     @Override
 137     public void onActivityCreated(Bundle savedInstanceState) {
 138         super.onActivityCreated(savedInstanceState);
 139         Log_OC.e(TAG, "onActivityCreated() start");
 140
 141         if (savedInstanceState != null) {
 142             mFile = savedInstanceState.getParcelable(KEY_FILE);
 143         }
 144
 145         if (mJustFolders) {
 146             setFooterEnabled(false);
 147         } else {
 148             setFooterEnabled(true);
 149         }
 150
 151         Bundle args = getArguments();
 152         mJustFolders = (args == null) ? false : args.getBoolean(ARG_JUST_FOLDERS, false);
 153         mAdapter = new FileListListAdapter(
 154                 mJustFolders,
 155                 getActivity(),
 156                 mContainerActivity
 157         );
 158         setListAdapter(mAdapter);
 159
 160         registerLongClickListener();
 161
 162         boolean hideFab = (args != null) && args.getBoolean(ARG_HIDE_FAB, false);
 163         if (hideFab) {
 164             setFabEnabled(false);
 165         } else {
 166             setFabEnabled(true);
 167             registerFabListeners();
 168
 169             // detect if a mini FAB has ever been clicked
 170             final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getActivity());
 171             if(prefs.getLong(KEY_FAB_EVER_CLICKED, 0) > 0) {
 172                 miniFabClicked = true;
 173             }
 174
 175             // add labels to the min FABs when none of them has ever been clicked on
 176             if(!miniFabClicked) {
 177                 setFabLabels();
 178             } else {
 179                 removeFabLabels();
 180             }
 181         }
 182   }
 183
 184     /**
 185      * adds labels to all mini FABs.
 186      */
 187     private void setFabLabels() {
 188         getFabUpload().setTitle(getResources().getString(R.string.actionbar_upload));
 189         getFabMkdir().setTitle(getResources().getString(R.string.actionbar_mkdir));
 190         getFabUploadFromApp().setTitle(getResources().getString(R.string.actionbar_upload_from_apps));
 191     }
 192
 193     /**
 194      * registers all listeners on all mini FABs.
 195      */
 196     private void registerFabListeners() {
 197         registerFabUploadListeners();
 198         registerFabMkDirListeners();
 199         registerFabUploadFromAppListeners();
 200     }
 201
 202     /**
 203      * registers {@link android.view.View.OnClickListener} and {@link android.view.View.OnLongClickListener}
 204      * on the Upload mini FAB for the linked action and {@link Toast} showing the underlying action.
 205      */
 206     private void registerFabUploadListeners() {
 207         getFabUpload().setOnClickListener(new View.OnClickListener() {
 208             @Override
 209             public void onClick(View v) {
 210                 Intent action = new Intent(getActivity(), UploadFilesActivity.class);
 211                 action.putExtra(
 212                         UploadFilesActivity.EXTRA_ACCOUNT,
 213                         ((FileActivity) getActivity()).getAccount()
 214                 );
 215                 getActivity().startActivityForResult(action, UploadSourceDialogFragment.ACTION_SELECT_MULTIPLE_FILES);
 216                 getFabMain().collapse();
 217                 recordMiniFabClick();
 218             }
 219         });
 220
 221         getFabUpload().setOnLongClickListener(new View.OnLongClickListener() {
 222             @Override
 223             public boolean onLongClick(View v) {
 224                 Toast.makeText(getActivity(), R.string.actionbar_upload, Toast.LENGTH_SHORT).show();
 225                 return true;
 226             }
 227         });
 228     }
 229
 230     /**
 231      * registers {@link android.view.View.OnClickListener} and {@link android.view.View.OnLongClickListener}
 232      * on the 'Create Dir' mini FAB for the linked action and {@link Toast} showing the underlying action.
 233      */
 234     private void registerFabMkDirListeners() {
 235         getFabMkdir().setOnClickListener(new View.OnClickListener() {
 236             @Override
 237             public void onClick(View v) {
 238                 CreateFolderDialogFragment dialog =
 239                         CreateFolderDialogFragment.newInstance(mFile);
 240                 dialog.show(getActivity().getSupportFragmentManager(), FileDisplayActivity.DIALOG_CREATE_FOLDER);
 241                 getFabMain().collapse();
 242                 recordMiniFabClick();
 243             }
 244         });
 245
 246         getFabMkdir().setOnLongClickListener(new View.OnLongClickListener() {
 247             @Override
 248             public boolean onLongClick(View v) {
 249                 Toast.makeText(getActivity(), R.string.actionbar_mkdir, Toast.LENGTH_SHORT).show();
 250                 return true;
 251             }
 252         });
 253     }
 254
 255     /**
 256      * registers {@link android.view.View.OnClickListener} and {@link android.view.View.OnLongClickListener}
 257      * on the Upload from App mini FAB for the linked action and {@link Toast} showing the underlying action.
 258      */
 259     private void registerFabUploadFromAppListeners() {
 260         getFabUploadFromApp().setOnClickListener(new View.OnClickListener() {
 261             @Override
 262             public void onClick(View v) {
 263                 Intent action = new Intent(Intent.ACTION_GET_CONTENT);
 264                 action = action.setType("*/*").addCategory(Intent.CATEGORY_OPENABLE);
 265
 266                 //Intent.EXTRA_ALLOW_MULTIPLE is only supported on api level 18+, Jelly Bean
 267                 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
 268                     action.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
 269                 }
 270
 271                 getActivity().startActivityForResult(
 272                         Intent.createChooser(action, getString(R.string.upload_chooser_title)),
 273                         UploadSourceDialogFragment.ACTION_SELECT_CONTENT_FROM_APPS
 274                 );
 275                 getFabMain().collapse();
 276                 recordMiniFabClick();
 277             }
 278         });
 279
 280         getFabUploadFromApp().setOnLongClickListener(new View.OnLongClickListener() {
 281             @Override
 282             public boolean onLongClick(View v) {
 283                 Toast.makeText(getActivity(),
 284                         R.string.actionbar_upload_from_apps,
 285                         Toast.LENGTH_SHORT).show();
 286                 return true;
 287             }
 288         });
 289     }
 290
 291     /**
 292      * records a click on a mini FAB and thus:
 293      * <ol>
 294      *     <li>persists the click fact</li>
 295      *     <li>removes the mini FAB labels</li>
 296      * </ol>
 297      */
 298     private void recordMiniFabClick() {
 299         // only record if it hasn't been done already at some other time
 300         if(!miniFabClicked) {
 301             final SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(getActivity());
 302             sp.edit().putLong(KEY_FAB_EVER_CLICKED, 1).commit();
 303             miniFabClicked = true;
 304         }
 305     }
 306
 307     /**
 308      * removes the labels on all known min FABs.
 309      */
 310     private void removeFabLabels() {
 311         getFabUpload().setTitle(null);
 312         getFabMkdir().setTitle(null);
 313         getFabUploadFromApp().setTitle(null);
 314         ((TextView) getFabUpload().getTag(com.getbase.floatingactionbutton.R.id.fab_label)).setVisibility(View.GONE);
 315         ((TextView) getFabMkdir().getTag(com.getbase.floatingactionbutton.R.id.fab_label)).setVisibility(View.GONE);
 316         ((TextView) getFabUploadFromApp().getTag(com.getbase.floatingactionbutton.R.id.fab_label)).setVisibility(View.GONE);
 317     }
 318
 319     private void registerLongClickListener() {
 320         getListView().setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
 321             public boolean onItemLongClick(AdapterView<?> arg0, View v,
 322                                            int index, long arg3) {
 323                 showFileAction(index);
 324                 return true;
 325             }
 326         });
 327     }
 328
 329     private void showFileAction(int fileIndex) {
 330         Bundle args = getArguments();
 331         PopupMenu pm = new PopupMenu(getActivity(),null);
 332         Menu menu = pm.getMenu();
 333
 334         boolean allowContextualActions =
 335                 (args == null) ? true : args.getBoolean(ARG_ALLOW_CONTEXTUAL_ACTIONS, true);
 336
 337         if (allowContextualActions) {
 338             MenuInflater inflater = getActivity().getMenuInflater();
 339
 340             inflater.inflate(R.menu.file_actions_menu, menu);
 341             OCFile targetFile = (OCFile) mAdapter.getItem(fileIndex);
 342
 343             if (mContainerActivity.getStorageManager() != null) {
 344                 FileMenuFilter mf = new FileMenuFilter(
 345                         targetFile,
 346                         mContainerActivity.getStorageManager().getAccount(),
 347                         mContainerActivity,
 348                         getActivity()
 349                 );
 350                 mf.filter(menu);
 351             }
 352
 353             /// TODO break this direct dependency on FileDisplayActivity... if possible
 354             MenuItem item = menu.findItem(R.id.action_open_file_with);
 355             FileFragment frag = ((FileDisplayActivity)getActivity()).getSecondFragment();
 356             if (frag != null && frag instanceof FileDetailFragment &&
 357                     frag.getFile().getFileId() == targetFile.getFileId()) {
 358                 item = menu.findItem(R.id.action_see_details);
 359                 if (item != null) {
 360                     item.setVisible(false);
 361                     item.setEnabled(false);
 362                 }
 363             }
 364
 365             FileActionsDialogFragment dialog = FileActionsDialogFragment.newInstance(menu, fileIndex, targetFile.getFileName());
 366             dialog.setTargetFragment(this, 0);
 367             dialog.show(getFragmentManager(), FileActionsDialogFragment.FTAG_FILE_ACTIONS);
 368         }
 369     }
 370
 371     /**
 372      * Saves the current listed folder.
 373      */
 374     @Override
 375     public void onSaveInstanceState(Bundle outState) {
 376         super.onSaveInstanceState(outState);
 377         outState.putParcelable(KEY_FILE, mFile);
 378     }
 379
 380     /**
 381      * Call this, when the user presses the up button.
 382      * <p>
 383      *     Tries to move up the current folder one level. If the parent folder was removed from the
 384      *     database, it continues browsing up until finding an existing folders.
 385      * </p>
 386      * @return Count of folder levels browsed up.
 387      */
 388     public int onBrowseUp() {
 389         OCFile parentDir = null;
 390         int moveCount = 0;
 391
 392         if (mFile != null) {
 393             FileDataStorageManager storageManager = mContainerActivity.getStorageManager();
 394
 395             String parentPath = null;
 396             if (mFile.getParentId() != FileDataStorageManager.ROOT_PARENT_ID) {
 397                 parentPath = new File(mFile.getRemotePath()).getParent();
 398                 parentPath = parentPath.endsWith(OCFile.PATH_SEPARATOR) ? parentPath :
 399                         parentPath + OCFile.PATH_SEPARATOR;
 400                 parentDir = storageManager.getFileByPath(parentPath);
 401                 moveCount++;
 402             } else {
 403                 parentDir = storageManager.getFileByPath(OCFile.ROOT_PATH);
 404             }
 405             while (parentDir == null) {
 406                 parentPath = new File(parentPath).getParent();
 407                 parentPath = parentPath.endsWith(OCFile.PATH_SEPARATOR) ? parentPath :
 408                         parentPath + OCFile.PATH_SEPARATOR;
 409                 parentDir = storageManager.getFileByPath(parentPath);
 410                 moveCount++;
 411             }   // exit is granted because storageManager.getFileByPath("/") never returns null
 412             mFile = parentDir;
 413
 414             listDirectory(mFile, MainApp.getOnlyOnDevice());
 415
 416             onRefresh(false);
 417
 418             // restore index and top position
 419             restoreIndexAndTopPosition();
 420
 421         }   // else - should never happen now
 422
 423         return moveCount;
 424     }
 425
 426     @Override
 427     public void onItemClick(AdapterView<?> l, View v, int position, long id) {
 428         OCFile file = (OCFile) mAdapter.getItem(position);
 429         if (file != null) {
 430             if (file.isFolder()) {
 431                 // update state and view of this fragment
 432                 listDirectory(file, MainApp.getOnlyOnDevice());
 433                 // then, notify parent activity to let it update its state and view
 434                 mContainerActivity.onBrowsedDownTo(file);
 435                 // save index and top position
 436                 saveIndexAndTopPosition(position);
 437
 438             } else { /// Click on a file
 439                 if (PreviewImageFragment.canBePreviewed(file)) {
 440                     // preview image - it handles the download, if needed
 441                     ((FileDisplayActivity)mContainerActivity).startImagePreview(file);
 442                 } else if (PreviewTextFragment.canBePreviewed(file)){
 443                     ((FileDisplayActivity)mContainerActivity).startTextPreview(file);
 444                 } else if (file.isDown()) {
 445                     if (PreviewMediaFragment.canBePreviewed(file)) {
 446                         // media preview
 447                         ((FileDisplayActivity) mContainerActivity).startMediaPreview(file, 0, true);
 448                     } else {
 449                         mContainerActivity.getFileOperationsHelper().openFile(file);
 450                     }
 451
 452                 }
 453             }
 454
 455         } else {
 456             Log_OC.d(TAG, "Null object in ListAdapter!!");
 457         }
 458
 459     }
 460
 461     /**
 462      * {@inheritDoc}
 463      */
 464     @Override
 465     public void onCreateContextMenu(
 466             ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
 467         Bundle args = getArguments();
 468         boolean allowContextualActions =
 469                 (args == null) ? true : args.getBoolean(ARG_ALLOW_CONTEXTUAL_ACTIONS, true);
 470         if (allowContextualActions) {
 471             MenuInflater inflater = getActivity().getMenuInflater();
 472             inflater.inflate(R.menu.file_actions_menu, menu);
 473             AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
 474             OCFile targetFile = (OCFile) mAdapter.getItem(info.position);
 475
 476             if (mContainerActivity.getStorageManager() != null) {
 477                 FileMenuFilter mf = new FileMenuFilter(
 478                     targetFile,
 479                     mContainerActivity.getStorageManager().getAccount(),
 480                     mContainerActivity,
 481                     getActivity()
 482                 );
 483                 mf.filter(menu);
 484             }
 485
 486             /// TODO break this direct dependency on FileDisplayActivity... if possible
 487             MenuItem item = menu.findItem(R.id.action_open_file_with);
 488             FileFragment frag = ((FileDisplayActivity)getActivity()).getSecondFragment();
 489             if (frag != null && frag instanceof FileDetailFragment &&
 490                     frag.getFile().getFileId() == targetFile.getFileId()) {
 491                 item = menu.findItem(R.id.action_see_details);
 492                 if (item != null) {
 493                     item.setVisible(false);
 494                     item.setEnabled(false);
 495                 }
 496             }
 497
 498 //            String.format(mContext.getString(R.string.subject_token),
 499 //                    getClient().getCredentials().getUsername(), file.getFileName()));
 500         }
 501     }
 502
 503     /**
 504      * {@inheritDoc}
 505      */
 506     @Override
 507     public boolean onFileActionChosen(int menuId, int filePosition) {
 508         mTargetFile = (OCFile) mAdapter.getItem(filePosition);
 509         switch (menuId) {
 510             case R.id.action_share_file: {
 511                 mContainerActivity.getFileOperationsHelper().shareFileWithLink(mTargetFile);
 512                 return true;
 513             }
 514             case R.id.action_open_file_with: {
 515                 mContainerActivity.getFileOperationsHelper().openFile(mTargetFile);
 516                 return true;
 517             }
 518             case R.id.action_unshare_file: {
 519                 mContainerActivity.getFileOperationsHelper().unshareFileWithLink(mTargetFile);
 520                 return true;
 521             }
 522             case R.id.action_rename_file: {
 523                 RenameFileDialogFragment dialog = RenameFileDialogFragment.newInstance(mTargetFile);
 524                 dialog.show(getFragmentManager(), FileDetailFragment.FTAG_RENAME_FILE);
 525                 return true;
 526             }
 527             case R.id.action_remove_file: {
 528                 RemoveFileDialogFragment dialog = RemoveFileDialogFragment.newInstance(mTargetFile);
 529                 dialog.show(getFragmentManager(), ConfirmationDialogFragment.FTAG_CONFIRMATION);
 530                 return true;
 531             }
 532             case R.id.action_download_file:
 533             case R.id.action_sync_file: {
 534                 mContainerActivity.getFileOperationsHelper().syncFile(mTargetFile);
 535                 return true;
 536             }
 537             case R.id.action_cancel_download:
 538             case R.id.action_cancel_upload: {
 539                 ((FileDisplayActivity) mContainerActivity).cancelTransference(mTargetFile);
 540                 return true;
 541             }
 542             case R.id.action_see_details: {
 543                 mContainerActivity.showDetails(mTargetFile);
 544                 return true;
 545             }
 546             case R.id.action_send_file: {
 547                 // Obtain the file
 548                 if (!mTargetFile.isDown()) {  // Download the file
 549                     Log_OC.d(TAG, mTargetFile.getRemotePath() + " : File must be downloaded");
 550                     ((FileDisplayActivity) mContainerActivity).startDownloadForSending(mTargetFile);
 551
 552                 } else {
 553                     mContainerActivity.getFileOperationsHelper().sendDownloadedFile(mTargetFile);
 554                 }
 555                 return true;
 556             }
 557             case R.id.action_move: {
 558                 Intent action = new Intent(getActivity(), FolderPickerActivity.class);
 559
 560                 // Pass mTargetFile that contains info of selected file/folder
 561                 action.putExtra(FolderPickerActivity.EXTRA_FILE, mTargetFile);
 562                 getActivity().startActivityForResult(action, FileDisplayActivity.ACTION_MOVE_FILES);
 563                 return true;
 564             }
 565             case R.id.action_favorite_file: {
 566                 mContainerActivity.getFileOperationsHelper().toggleFavorite(mTargetFile, true);
 567                 return true;
 568             }
 569             case R.id.action_unfavorite_file: {
 570                 mContainerActivity.getFileOperationsHelper().toggleFavorite(mTargetFile, false);
 571                 return true;
 572             }
 573             case R.id.action_copy:
 574                 Intent action = new Intent(getActivity(), FolderPickerActivity.class);
 575
 576                 // Pass mTargetFile that contains info of selected file/folder
 577                 action.putExtra(FolderPickerActivity.EXTRA_FILE, mTargetFile);
 578                 getActivity().startActivityForResult(action, FileDisplayActivity.ACTION_COPY_FILES);
 579                 return true;
 580             default:
 581                 return false;
 582         }
 583     }
 584
 585     /**
 586      * {@inhericDoc}
 587      */
 588     @Override
 589     public boolean onContextItemSelected (MenuItem item) {
 590         AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
 591         boolean matched = onFileActionChosen(item.getItemId(), ((AdapterContextMenuInfo) item.getMenuInfo()).position);
 592         if(!matched) {
 593             return super.onContextItemSelected(item);
 594         } else {
 595             return matched;
 596         }
 597     }
 598
 599
 600     /**
 601      * Use this to query the {@link OCFile} that is currently
 602      * being displayed by this fragment
 603      *
 604      * @return The currently viewed OCFile
 605      */
 606     public OCFile getCurrentFile() {
 607         return mFile;
 608     }
 609
 610     /**
 611      * Calls {@link OCFileListFragment#listDirectory(OCFile, boolean)} with a null parameter
 612      */
 613     public void listDirectory(boolean onlyOnDevice){
 614         listDirectory(null, onlyOnDevice);
 615     }
 616
 617     public void refreshDirectory(){
 618         listDirectory(getCurrentFile(), MainApp.getOnlyOnDevice());
 619     }
 620
 621     /**
 622      * Lists the given directory on the view. When the input parameter is null,
 623      * it will either refresh the last known directory. list the root
 624      * if there never was a directory.
 625      *
 626      * @param directory File to be listed
 627      */
 628     public void listDirectory(OCFile directory, boolean onlyOnDevice) {
 629         FileDataStorageManager storageManager = mContainerActivity.getStorageManager();
 630         if (storageManager != null) {
 631
 632             // Check input parameters for null
 633             if (directory == null) {
 634                 if (mFile != null) {
 635                     directory = mFile;
 636                 } else {
 637                     directory = storageManager.getFileByPath("/");
 638                     if (directory == null) return; // no files, wait for sync
 639                 }
 640             }
 641
 642
 643             // If that's not a directory -> List its parent
 644             if (!directory.isFolder()) {
 645                 Log_OC.w(TAG, "You see, that is not a directory -> " + directory.toString());
 646                 directory = storageManager.getFileById(directory.getParentId());
 647             }
 648
 649             mAdapter.swapDirectory(directory, storageManager, onlyOnDevice);
 650             if (mFile == null || !mFile.equals(directory)) {
 651                 mCurrentListView.setSelection(0);
 652             }
 653             mFile = directory;
 654
 655             updateLayout();
 656
 657         }
 658     }
 659
 660     private void updateLayout() {
 661         if (!mJustFolders) {
 662             int filesCount = 0, foldersCount = 0, imagesCount = 0;
 663             int count = mAdapter.getCount();
 664             OCFile file;
 665             for (int i=0; i < count ; i++) {
 666                 file = (OCFile) mAdapter.getItem(i);
 667                 if (file.isFolder()) {
 668                     foldersCount++;
 669                 } else {
 670                     if (!file.isHidden()) {
 671                         filesCount++;
 672
 673                         if (file.isImage()) {
 674                             imagesCount++;
 675                         }
 676                     }
 677                 }
 678             }
 679             // set footer text
 680             setFooterText(generateFooterText(filesCount, foldersCount));
 681
 682             // decide grid vs list view
 683             OwnCloudVersion version = AccountUtils.getServerVersion(
 684                     ((FileActivity)mContainerActivity).getAccount());
 685             if (version != null && version.supportsRemoteThumbnails() &&
 686                     DisplayUtils.isGridView(mFile, mContainerActivity.getStorageManager())) {
 687                 switchToGridView();
 688                 registerLongClickListener();
 689             } else {
 690                 switchToListView();
 691             }
 692         }
 693     }
 694
 695     private String generateFooterText(int filesCount, int foldersCount) {
 696         String output;
 697         if (filesCount <= 0) {
 698             if (foldersCount <= 0) {
 699                 output = "";
 700
 701             } else if (foldersCount == 1) {
 702                 output = getResources().getString(R.string.file_list__footer__folder);
 703
 704             } else { // foldersCount > 1
 705                 output = getResources().getString(R.string.file_list__footer__folders, foldersCount);
 706             }
 707
 708         } else if (filesCount == 1) {
 709             if (foldersCount <= 0) {
 710                 output = getResources().getString(R.string.file_list__footer__file);
 711
 712             } else if (foldersCount == 1) {
 713                 output = getResources().getString(R.string.file_list__footer__file_and_folder);
 714
 715             } else { // foldersCount > 1
 716                 output = getResources().getString(R.string.file_list__footer__file_and_folders, foldersCount);
 717             }
 718         } else {    // filesCount > 1
 719             if (foldersCount <= 0) {
 720                 output = getResources().getString(R.string.file_list__footer__files, filesCount);
 721
 722             } else if (foldersCount == 1) {
 723                 output = getResources().getString(R.string.file_list__footer__files_and_folder, filesCount);
 724
 725             } else { // foldersCount > 1
 726                 output = getResources().getString(
 727                         R.string.file_list__footer__files_and_folders, filesCount, foldersCount
 728                 );
 729
 730             }
 731         }
 732         return output;
 733     }
 734
 735     public void sortByName(boolean descending) {
 736         mAdapter.setSortOrder(FileStorageUtils.SORT_NAME, descending);
 737     }
 738
 739     public void sortByDate(boolean descending) {
 740         mAdapter.setSortOrder(FileStorageUtils.SORT_DATE, descending);
 741     }
 742
 743     public void sortBySize(boolean descending) {
 744         mAdapter.setSortOrder(FileStorageUtils.SORT_SIZE, descending);
 745     }
 746 }